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9901.

Why temperature remains same on its boiling or melting point??thanks?

Answer» Because excess heat is taken to break the intermollecular attaction force.
Because excess heat is taken for state change.
9902.

Define solubility

Answer» When a substance get fully dissolved in water without leaving any residue
9903.

How many types of inertia

Answer» There are three types of inertia -1.Inertia of rest2.Inertia of motion3.Inertia of direction
9904.

Give two reason to justify that an iron almirah is a solid

Answer» Iron has fixed shape and volume.Iron doesn\'t flow.
9905.

Give two reason to justify thar water is a liquid at room temperature

Answer» two reasons that water is a liquid at room temperature as • It can take shape of any container • It cant be freezed or boiled at room temperature which is 25°C water boiling temperature is 100°c and freezing is 0° hope it helped you
Because boiling temperature of water is 100°c and freezing point is 0°c
9906.

Prevertion of ozone layer

Answer»
9907.

Physics project

Answer»
9908.

What is the definition of kinetic energy?

Answer» The energy possese by the particles of matter due to its motion is known as kinetic energy.
1/2 mv^2
Particles of matter are continuously moving, that is, they posses an energy that is kinetic energy
9909.

procaryotic cell

Answer» These cells do not have well organised nucleus and other membrane bound cell organelles
Pro: premitive, karyotic: nucleus. The cells which have nuclear material without nuclear membrane is called Prokaryotic cells.
9910.

What is meant by a pure substance?

Answer» Pure substance is a substance made up of only one kind of particles.
Pure substance is a substance that does not have more than one type of compound in it.
9911.

In a collision between heavier and lighter body which body experince greater change in momentum

Answer» Lighter as heavier body has greater mass , greater the mass more will be the momentum
9912.

What does (Gr) represents

Answer» Germanium
9913.

Chemistry sa1 question paper

Answer»
9914.

Kepler law

Answer» Kepler’s three laws of planetary motion are: • The law of orbits • The law of areas and • The law of periodsKepler’s first lawKepler’s first law, the law of orbits, states that the orbit of a planet is an ellipse with the sun at one of the foci.\xa0An ellipse is a closed, curved shape that is defined by two points called foci representing an elongated circle.The closest point on a planet’s orbit from the sun is called perihelion and the farthest point from the sun is called the aphelion.\xa0Kepler’s second lawKepler’s second law of planetary motion, also known as the law of areas, states that the line joining the planet to the sun sweeps out equal areas in equal intervals of time as the planet \xa0 travels in its orbit.Kepler’s third law\xa0Kepler’s third law, the law of periods, defines the relationship between the orbital period of a planet and the average radius of its orbit.\xa0The orbital period of a planet, denoted by T, is the time taken by the planet to make a complete revolution around the sun along its orbit.
9915.

Using 2nd law of motion derive the relation between F and A0

Answer»
9916.

How could you confirm that colourless liquid given to you is pure water.

Answer» Pure water has a fixed boiling point of 100°c under standerd atmospheric pressure . This fact can be used to confirm that a coloirless liquid given to us is water.
9917.

What is a S.I unit of measurment ?

Answer» What measurment?time ,length, volume, pressure ,density ,force what?
The International System of Units is a scientific method of expressing the magnitudes or quantities of important natural phenomena. All SI units can be expressed in terms of standard multiple or fractional quantities, as well as directly.The meter (m) is the SI unit of displacement or length.The kilogram (kg) is the SI unit of mass.The second (s or sec) is the SI unit of time.The kelvin (K), also called the degree Kelvin (abbreviation, o K), is the SI unit of temperature.The amper (A) is the SI unit of electric current.The candela (cd) is the SI unit of luminous intensity.The mole (mol) is the SI unit of material quantity.
9918.

Five disadvantages of manure

Answer» It don\'t help in better production. It only help in making soil fertile.
It is needed in large quantities as compared to fertilizer.
It is bulky
It work so slowly conpare to fertilizar
9919.

What is aerochyma

Answer» These are specilized paranchymatous cells present in aquatic plants. They have air filled in their intercellular spaces which provides buoyancy and helps keeping the plant afloat.
9920.

How are ATP molecules are formed

Answer» ATP molecules are for by the process of cellular respiration and the process of cellular respiration is done by mitochondria.
9921.

How ATP molecules are formed

Answer» ATP molecules are formed in mitochondria.
9922.

वर डोज प्रोटिन स्य्न्ठेसी insइडि डा cell

Answer» Ribosomes
9923.

What is homogeneous substanaces

Answer» have uniform composition throughout the mixture do not have physical distinct part cannot be separated from physical process.
9924.

Why we are flying in moon

Answer» Due to its very low gravitatinal force as compared to earth\'s grav.....force.
Due to itsgravitation force
9925.

Who given the term of prokatyotic and Eukaryotic

Answer» Edouard chatton
9926.

Mass of proton.

Answer» A proton is a subatomic particle with a positive electric charge. Protons are found in the nucleus of every atom. The mass of a proton is extremely small when put in human sized units. The mass of one proton is 1.67 x 10-27 kg.
9927.

What is atomicity???

Answer» The number of atoms present in a single molecule is termed as its atomicity. It can be classified into four types.The molecules of many elements are composed of only a single atom of that element. They are termed as monoatomic. For instance, Ar (Argon), He(Helium). So their atomicity is one.On the other hand the molecules of many elements are composed of two atoms of that element. For instance, oxygen can never exist independently and exist as O2 molecule known as diatomic So its atomicity is 2.The molecules of many elements are composed of three atoms of that element. They are termed as triatomic For instance, O3, CO2. So their atomicity is 3.The molecules of many elements are composed of four atoms of that element. They are termed as tetra atomic For instance, P4, SO3. So their atomicity is 4.
Plz send ans
9928.

Is limseed a kharif or rabi cropd

Answer» The kharif crops include rice, maize, sorghum, pearl millet/bajra, finger millet/ragi (cereals), arhar (pulses), soyabean, groundnut (oilseeds), cotton etc. The rabi crops include wheat, barley, oats (cereals), chickpea/gram (pulses), linseed, mustard (oilseeds) etc.
??
9929.

What pollyn grains

Answer» Pollen grains are produced in enormous quantity in maize to ensure pollination as maize is pollinated by wind. Pollen is the male reproductive cell of a plant. Each pollen grain contains a sperm cell, which needs to fertilize an egg cell in order to produce seeds. Pollen is produced by the male portion of a flower, those sometimes showy, sometimes smelly blooms we associate with spring.
9930.

Mitochondria called power house of the cell

Answer» Mitochondria Known as powerhouse of the cell because these are the site of cellular respiration they release energy in the form of ATP by oxidation of Carbohydrates and fats this energy is then utilised by the organelle is to carry out their basic function
Mitochondria is known as power house of cell because it help aeriobic respiration and generateenergy in the form of ATP(adenosine triphosphate) which perform various function for the cell also it is known as currency of the cell
9931.

Unit of work

Answer» Joules
Work is said to be done when a body or object moves with the application of external force.If a force of 5 newtons is applied to an object and it moves 2 meters, the work will be 10 newton-meter. Newton meter in termed and Joules and it is the unit of Work.
9932.

Is liquid compressible ?

Answer» No liquid is not compressibility and compress solid and liquid
Their compressibility is between solid ang gas
No
9933.

A person can jump upto 1 m on earth . How high can he jump on the moon ?

Answer» Moon has on 1/6 gravitational pull as compared to the earth.So if a person can jump upto 1m on earth ,it can only jump upto 1/6 mon moon.
1/6 m
9934.

Snake sounds

Answer» Hiss
9935.

what cause of wind

Answer»
9936.

રાત્રે સમુદ્રની ગતિ કઈ તરફની હોય છે.

Answer»
9937.

What is epithilium

Answer» 1) It is the protective tissue covering the entire animal body internally and externally2) it is the simplest tissue
A thin tissue forming the outer layer of the body\'s surface and lining the alimentary canal and other hollow stuture
9938.

In lining of mouth which tissue is found Simple or stratified squamous?

Answer» Sorry it was not written by me it is written by my big bro sorryyyyyyyyyyyyyyyy 2 u
My title is also gupta . It will be a nice couple?????WTF
simple epithelium
9939.

Describe endoplasmic reticulum

Answer» A network of interconnecting membranous tube like structure and give mechanical support to the cell and it is and intracellular transport system for various substance
It is the production unit of the bodyER are large , irregular, double membranous, network of tubules or sheetsSimilar to plasma membraneIt has two types : RER and SER Ribosomes are present in RER and it synthesis proteins.Ribosomes are absent in SER and it synthesis lipids and fats.Functions:They make frameworkThey make proteins and lipids which help in the manufacturing of cell membrane .In vertebrates they help in detoxification of poison and drugs.Also helps in the formation of nuclear membrane and cell plate.
9940.

Example of invertebrate and vertebrates

Answer» Invertebrates do not possess a backbone. 95 to 98 percent of animal species are invertebrates. Flatworms, arthropods, sponges, insects are few examples Invertebrates.Vertebrates possess a backbone and an internal skeleton. 2 to 3 percent animal species are vertebrates. Mammals, fish, reptiles, amphibians, and birds are examples of Vertebrates.
9941.

What is lithography

Answer» Pata nanai
9942.

How we can convert saturated solution into unsaturated solution

Answer» A saturated solution is basically a solution that has dissolved as much solute as it is capable of dissolving. In a saturated solution, no more solute can be dissolved at a given temperature. An unsaturated solution can hence dissolve more solute. A saturated solution can be converted into an unsaturated solution :1) By adding more solvent to the solution. The solution will be able to dissolve more solute then.2) By heating the solution. At higher temperature, the solution will be able to dissolve more solute.
9943.

What is xyle

Answer» The transportation of water and dissolved mineral salts, from the root to stem, leaves, flowers and other parts of the plant takes place through xylem. Xylem is a vascular and mechanical tissue. Xylem is composed of cells of four different types: 1. Tracheids 2. Vessels or tracheae 3. Xylem parenchyma 4. Xylem sclerenchyma (or fibers).
9944.

From where 1st cell comes in our body ?

Answer» By fusing of male & female gamete our 1st cell is formed which further divides & Stem Cells are formed.
9945.

Give three features of cardiac muscles?

Answer» It donot work on our willIt never get fattyIt is only found in heart
1) It is also called involuntary muscles 2) it is found in heart3) they are richly supply with blood
their cells are involuntary , they never get fatigued and their cells are cylindrical and branched
9946.

Why the colour of a blood of a cockroach are white ??????

Answer» Male cockroaches have colorless blood, while the female cockroaches may occasionally have orange blood. This is due to the absence of hemoglobin in their blood (the same cell that makes human blood red). Human beings use hemoglobin to carry oxygen, but cockroaches do not breathe the way we do. Cockroaches use a series of tubes called tracheae for breathing (and exhaling) and in fact they can breathe even in absence of a head. Cockroaches, like other insects, have an open circulatory system and their blood is also known as hemolymph (or haemolymph). It flows freely inside the body, touching all the internal organs and tissues. About 90% of this blood is watery fluid and the remaining 10% is made up of hemocytes. The oxygen is delivered by the tracheal system and not the circulatory system in a cockroaches (or most of the other insects).
9947.

What is the advantages of classification organisms?

Answer» There are millions of organisms on Earth , we cannot study then in are by Span. Hence , We classify them & learn the common characteristics about them which makes our study easy .
we can know about simmilarity and difference between different type of organisms
Understanding and easy to study
There are so many advantages of c of classification of organisms summer as follows if we do not classify the organism we do not calculated typefor what they belong body structure cell organisms organelle is the kingdom
9948.

What is compound???

Answer» 1) a compound is obtained from different kind of atom.2) a compound can be split into new substances by chemical methods.
A substance consisting of atoms or ions of two or more different elements in definite proportions joined by chemical bonds into a molecule. The elements cannot be separated by physical means. Water, for example, is a\xa0compound\xa0having two hydrogen atoms and one oxygen atom per molecule
Basically compound is made from two different elements
9949.

What. Is. Taxonomy

Answer» It is the biological science or branch of study in which we deals the identification ,namenclature & classification of the organisms
The branch of science deals with identification and nomenclature
The science dealing with the identification and classification of organisms
9950.

State the types of tissue in detail? and explain its types.

Answer» Tissue are two types: 1) plant tissue2) animal tissuePlant tissue ---- it is a fix tissue ,it need less energy,mostly tissue are dead in this tissue ,they are less complex ,due to activity of meristematic tissue plants continue to grow through out the life & it is two types meristematic tissue & permanent tissue Animal tissue---- it is a mobile tissue ,it need more energy ,mostly tissue are living in this tissue ,these are more complex ,animal do not show after reaching maturity & it is four types epithelium ,muscular ,connective ,nervous tissue